Hi, recently discovered the “Nagakoa hand winder CT-406” on ebay. The seller is super friendly and helpful. Unfortunately the shipping costs are over 40 EUR (more than 4 x the selling price), so I didn't buy it. A demo on YT shows that the CT-406’s transmission ratio is very high and winding might therefore be difficult sometimes. Asked myself: why not do it yourself? I then used my beginner's knowledge to design a model for 3-D printing. It’ a simpler version with only one gear stage (transmission ratio 1:6). Instead of a reverse lock a simple arrow is indicating the right direction of rotation. Works quite well. To be honest: I have no idea what I could do with the thing but I had a lot of fun. A small electric screwdriver would do the same thing, of course… Attached some pictures
Hi, I have no commercial interests and am happy to share the files of this nonsense thing. The dimensions are adapted to the tolerances of my printer. If you want to modify or optimize something, the construction files are also included. The “Zeichnung“ (drawing) was the first idea, the dimensions are approximate.
Fun idea. Tried searching e-bay but no luck. "Nagaoka hand winder" is what Google said the spelling was.
